wifi: iwlwifi: mvm: fix driver-set TX rates on old devices
In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: fix driver-set TX rates on old devices On old devices such as 7265D, rates are still encoded in version 1 format, which doesn't use the CCK/OFDM rate index (0-3/0-7) but rather their PLCP value (e.g. 10 for 1 Mbps CCK rate.) While introducing v3 rates, I changed the driver from internally handling v1 rates and converting to v2, to internally handling v3 and converting to v1 or v2 according to the firmware. I accordingly changed the code in iwl_mvm_mac80211_idx_to_hwrate() to no longer have different values for different APIs. This was correct. However, I later reverted this part of the change, because it was reported that I had broken beacon rates, causing a FW assert/crash. This caused TX_CMD rates to be set incorrectly, potentially causing a warning when reported back from the device as having been used. Fix this (hopefully correctly now) by handling beacon rates in the TX_CMD that's embedded in the beacon template command separately. Restore iwl_mvm_mac80211_idx_to_hwrate() to return only the rate index, not PLCP value, fixing the real TX_CMD.
CVE-2026-64176
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-64176
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3592c0083fb29cca13cd9978b8844d58b4eff548",
"lessThan": "6fe92651b44fd3cfc8dcfdaad0e82885c384dada",
"versionType": "git"
},
{
"status": "affected",
"version": "3592c0083fb29cca13cd9978b8844d58b4eff548",
"lessThan": "6b58a79f2cd98156856eb49e8b55db5facdd7e6d",
"versionType": "git"
},
{
"status": "affected",
"version": "3592c0083fb29cca13cd9978b8844d58b4eff548",
"lessThan": "fb84b5cbcaab3ca0f4e961d92a40ed7f3aac483b",
"versionType": "git"
},
{
"status": "affected",
"version": "c6c14c2b08e9c4c82e1ec39ef3e8b9ec845ac7fd",
"versionType": "git"
},
{
"status": "affected",
"version": "6.17.9",
"lessThan": "6.18",
"versionType": "semver"
}
],
"programFiles": [
"drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c",
"drivers/net/wireless/intel/iwlwifi/mvm/utils.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.18",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.34",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.11",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c",
"drivers/net/wireless/intel/iwlwifi/mvm/utils.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-64176
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40970 · Revision 1
- Added to Heist Feed
- Publisher date